PTFE Bearings — Material Specifications, Engineering Data & OEM Supply
Built to international industrial standards, PTFE Bearings from HEMSUN delivers low friction and universal chemical inertness for backup rings and chevron packings. Fabricated in Dahegam, Gandhinagar, Gujarat, India from high-density PTFE fluoropolymer with full material certification.
Where PTFE Bearings is used
Plain bearing carrying radial load without grease, relying on the polymer’s low friction where oil lubrication is unwanted or impossible.
PTFE suits dry plain bearings because it runs against steel without seizing, removing the grease point altogether.
Key properties
In-house PTFE Bearings production
moulding and CNC under one roof
Drawing, CAD (STEP/IGES/DXF), or sample-based reverse engineering
PTFE grade options matched to chemical and thermal duty
Dimensional inspection with reports on request
IEC-registered exporter
worldwide packing and docs
Flexible MOQ
prototypes, pilot lots, recurring OEM supply
Specifications
| Property | Value |
|---|---|
| Component Type & Grade | PTFE Bearings (Specification Code HES-914) |
| Base Raw Material | PTFE fluoropolymer (Virgin FDA 21 CFR 177.1550 / Custom Filled) |
| Continuous Service Temp. | -200°C to +260°C (-328°F to +500°F) |
| Tensile Strength at Break | 20 to 35 MPa (Virgin) / 14 to 25 MPa (Filled) |
| Elongation at Break | 250% to 450% (ASTM D4894) |
| Specific Gravity / Density | 2.14 to 2.18 g/cm³ (ASTM D792) |
| Dielectric Strength | 50 to 80 kV/mm (0.1 mm film) |
| Surface Roughness Finish | Diamond Polished Ra ≤ 0.20 µm to Ra ≤ 0.40 µm |
| Dimensional Tolerance | ISO Grade 1 to Grade 3 / Drawing Nominals (±0.02 mm) |
| Manufacturing & Origin | Moulded, Sintered & CNC Machined in Dahegam, Gandhinagar, Gujarat, India |
Manufacturing process
PTFE Bearings is manufactured at our Dahegam facility using high-pressure compression moulding followed by computer-controlled oven sintering up to 370°C and precision CNC finishing. Raw PTFE fluoropolymer resin is cold-pressed at 300 to 450 kg/cm² (3,000 to 4,500 psi) into rigid green preforms. Sintering under programmed heating ramps enables complete particle coalescence, eliminating internal porosity and yielding high tensile and dielectric strength.
Material selection notes
The chemical resilience of PTFE fluoropolymer ensures PTFE Bearings remains completely impervious to corrosive chemicals, steam, and industrial fuels. Its low frictional properties reduce torque requirements in valve assemblies and prevent galling against mating metal faces.
How to specify your order
Sizing and ordering PTFE Bearings: Share drawing files (STEP/PDF), annual volume projections, and any compliance requirements (FDA, USP Class VI). Our technical department confirms tooling costs, sample schedules, and volume production lead times.
Quality checks and inspection
Every batch of PTFE Bearings undergoes stringent quality checks at our Dahegam plant: laser micrometer diameter scanning, surface roughness profilometry (Ra ≤ 0.2 µm), and tensile/elongation testing per ASTM D4894 to ensure complete material coalescence.
Ordering and export documentation
Domestic PTFE Bearings orders ship with GST invoice and e-way bill where applicable. Export orders include commercial invoice, packing list, and certificate of origin from our IEC-registered works. Air and sea freight packing with desiccant and shock protection for international buyers Contact info@hemsun.com or sales@hemsun.com with your rings specification.
Export packing and lead time
HEMSUN ENGG. INDUSTRIES supplies PTFE Bearings to international valve and pump manufacturers globally. Export orders include comprehensive quality certificates, packing lists, and seaworthy timber boxing compliant with ISPM 15 standards.
Storage and handling
Guidelines for PTFE Bearings: Handle with clean gloves during precision assembly. Ensure mating metallic seats and shafts exhibit surface finishes of Ra ≤ 0.4 µm for maximum component operating life.
Compliance & Standards
HEMSUN is a DGFT IEC registered exporter (Government of India). Sealing faces are inspected for flatness and finish, thickness verified on calibrated gauges, and sintered density checked per ASTM D792. A mill test certificate ships with the order. Export paperwork — commercial invoice, packing list and certificate of origin — accompanies international despatch.
Frequently Asked Questions
What PTFE Bearings options does HEMSUN manufacture?
Built to international industrial standards, PTFE Bearings from HEMSUN delivers low friction and universal chemical inertness for backup rings and chevron packings. Fabricated in Dahegam, Gandhinagar, Gujarat, India fro…
Can you supply PTFE Bearings for OEM and export orders?
Yes. We support prototype lots, recurring OEM programmes, and export packing with material certificates and dimensional inspection reports on request. Typical RFQ response is within one business day when drawings are complete.
How do I request a quote for PTFE Bearings?
Send material grade, dimensions or drawing, quantity, application media, and operating temperature/pressure via https://hemsun.com/contact. Our engineering team confirms manufacturability, lead time, and pricing.
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